1-First, set your oven to 350°F (175°C) and fit the 9-inch pastry crust into a pie pan, pricking the bottom to avoid air bubbles.

2-In a bowl, whisk the 3 large eggs with 1¼ cups sugar until it’s light and fluffy, which helps build the pie’s creamy base.

3-Next, blend in the ½ cup softened butter and 1 teaspoon vanilla extract for added richness.

4-Then, gently stir in the 1 cup buttermilk, 3 tablespoons all-purpose flour, ¼ teaspoon salt, and 1 tablespoon lemon juice until everything combines into a lump-free batter.

5-Pour this mixture into your prepared crust, making sure it’s evenly distributed.

6-Bake for 45-50 minutes until the filling sets and the crust turns golden, keeping an eye on it to adjust for any substitutions like vegan options.

7-Once baked, let the pie cool on a rack before slicing to achieve the perfect texture.